Reality TV
According to the Daily Star, producers believe Flack has the right credentials to present the spin-off show.
Her past TV work includes fronting The Pepsi Chart Show and Saturday morning children's programme TMi.
She also appeared on Big Brother's Big Mouth as a guest earlier this year.
"Caroline is sexy and sassy," said a source. "She has got all the quirky qualities you need to not only deal with the housemates but also their freaky friends and family."
Dermot O'Leary quit the show earlier this year to focus on his work with ITV's X Factor.
Big Brother 9 will be hosted by its regular presenter Davina McCall when it begins in May.
More: Reality TV, Big Brother
Related Stories
Tube Talk
TV's Biggest Bitches: Friday FiverOur picks for the five biggest bitches on both sides of the Atlantic.
TV Interviews
Apprentice Gabrielle 'was easy target'Digital Spy talks to Gabrielle Omar about being too nice for the show.
TV Ratings
Grandma's House rises for final episodeLong Lost Family's resilience helps ITV score another primetime victory.
TV Recaps
'Homeland' finale: Have your sayHomeland's incredible finale is reviewed by Digital Spy. Share your verdict.
